Gray, D. &. O. (2016). A Critical introduction to Coaching & Mentoring. Sage Publication.
Čikaški stil citiranja (17. izdanje)Gray, David & Others. A Critical Introduction to Coaching & Mentoring. London: Sage Publication, 2016.
MLA način citiranja (9. izdanje)Gray, David & Others. A Critical Introduction to Coaching & Mentoring. Sage Publication, 2016.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.